In terms of the overall point, I was talking about Unreal specifically. If it makes you understand better that all engines are geared toward specific game features, great, read it that way. However, you still don't seem to understand that UE5 isn't the right engine out-of-the-box for every game. So even if I buried that, and now it's clear, you're still in denial.
You keep saying it, but at the scale of games Bethesda makes it isn't simply a fact that switching engines will be faster or easier. Even switching a code base from UE3 to UE4, or UE4 to UE5 wasn't/isn't a simple task (I've done it, I know.) Completely switching engines means you're losing almost everything. You simply don't seem to understand the scale of work entailed with moving major features from one engine to another. Or for maintaining features in an engine you don't have full control of. I've done that too.
You've already said that you can't be convinced otherwise though, so clearly you think you're smarter than them, despite their deep knowledge of what they're making.
I'm not saying they made all the best choices (or that they will going forward), but being flippant about the obviousness of the choice, and saying it is simply faster to switch engines demonstrates serious lack of knowledge and experience in the matter.
Yo momma tried reading a book but she so fat she ate it as a snack instead.